Across Australia, people are looking to the skies for a saviour. Many people have seen objects in the sky that they could not identify, and many believe that we are not alone in the universe.But there are also people who have built spiritual belief systems around the idea that aliens once came to Earth, and will return one day to take them away to a better place. The Raelians, who had their "annual awakening seminar" earlier this month in Queensland, are a prominent group in Australia that believe aliens created them and will return. These are most commonly referred to as UFO cults, the most infamous of which is Heaven's Gate, whose 39 members committed suicide in 1997 in the hope that their souls would catch a ride to the Kingdom of Heaven on a passing spaceship. But Monash University sociology professor Gary Bouma said religions based on UFOs are an "exceedingly tiny fraction" of religious groups. Professor Bouma, an expert on religion and society, said they were "one of the absolute fringes of spirituality". "It's simply a tiny little group pursuing an esoteric idea. Life has been full of them, they've come and gone," he said. "They never stand up against the mainstream, for a whole variety of reasons." But since space travel began in the 1950s, the idea of extraterrestrials has taken hold of people's imaginations. Films like Close Encounters of the Third Kind and television series like The X-Files have made aliens and UFOs a part of popular culture. There is even a predominant image of an alien - a small, grey creature with big, dark eyes. And with new technology such as the internet, small groups can have a large and enduring presence. The Raelians are one group that has used the internet to become a worldwide phenomenon. They have an international headquarters in Switzerland, and offices all over the world, from Afghanistan to Zimbabwe. They claim there are up to 70,000 Raelians worldwide, with about 500 in Australia. A registered non-profit organisation, their main aim is "to create peace on Earth".